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2014 - 2017 Corvette: Service Bulletin: #17-NA-040: Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies - (Mar 7, 2017)

#17-NA-040: Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies - (Mar 7, 2017)

Subject Brake Squeal or Squeak Noise Intermittently on Initial Brake Applies

This Bulletin replaces PI1496C and PI0917F. Please discard PI1496C and PI0917F.


Brand:

Model:

Model Year:

VIN:

Engine:

Transmission:

from

to

from

to

Buick

Regal GS

2013

2017

 

All

All

Cadillac

ATS

XTS

2013

2017

 

All

All

Cadillac

CTS (VIN A)

2014

2017

 

All

All

Cadillac

ATS-V, CTS-V,

CT6

2016

2017

 

All

All

Chevrolet

Corvette, SS

2014

2017

 

All

All

 

Involved Region or Country

North America and N.A. Export Regions

Condition

Some customers may comment on a squeal or squeak noise from the front brakes. This condition normally only occurs on initial brake applications after the vehicle has sat for an extended time. The condition occurs typically under light braking, in speeds under 16 km/h (10 mph). After 1-6 brake applies, or after braking at higher speeds, the noise no longer occurs. This condition may occur more often in high humidity conditions.

Correction

Apply a coat of copper paste to completely cover the pad backing plate abutments on each end.

Parts Information

Description

Part Number

Qty

Lubricant

19303310

(In Canada, use 19303311)

3

Warranty Information

For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage information.

Labor Operation

Description

Labor Time

2480038*

Cleaning and Reapplying Lubricant to Front Disc Brake Pads

0.6 hr

Add

Cleaning and Reapplying Lubricant to Rear Disc Brake Pads

0.4 hr

*This is a unique Labor Operation for Bulletin use only.

Service Procedure

Important: The use of wheel cleaners or power washers directly pointed at the brake caliper may wash the copper paste off of the brake pads. It may be necessary to apply the copper paste again if the lubricant is washed away. The copper paste should be applied whenever the brake pads are removed or replaced.

Important: (Chevrolet SS Models Only) Do not apply the copper paste to the back of the backing plate.

Apply a coat of copper paste to completely cover the pad backing plate abutments on each end. The paste should not extend onto the friction material. Follow the instructions listed below.

Buick Regal


 
(1) Abutment Area

 
(1) Cleaned Abutment Area
(2) Correct Amount of Copper Paste
(3) Incorrect Amount of Copper Paste
  1. Remove the front disc brake pads. Refer to Front Disc Brake Pads Replacement in SI.
  2. Using acrysol Kent Industries Part# P2005 or equivalent, wipe clean both ends of the abutment area on the front pads and calipers.
  3. Apply approximately 0.10 g (0.0035 oz) of copper paste to each end of the disc brake pad abutments that contact the brake caliper bracket.

    Note: Avoid a light apply of the paste as illustrated above.

  4. Re-install the front disc brake pads. Refer to Front Disc Brake Pads Replacement in SI.

Cadillac Models and Chevrolet Models


 
(1) Abutment Area

 
(1) Cleaned Abutment Area
(2) Correct Amount of Copper Paste
(3) Incorrect Amount of Copper Paste
  1. Remove the front disc brake pads. Refer to Front Disc Brake Pads Replacement in SI.
  2. Remove the rear disc brake pads. Refer to Rear Disc Brake Pads Replacement in SI.

  3. Using acrysol Kent Industries Part# P2005 or equivalent, wipe clean both ends of the abutment area on the front and rear pads and calipers.
  4. Apply approximately 0.10 g (0.0035 oz) of copper paste to each end of the disc brake pad abutments that contact the brake caliper bracket.

    Note: Ensure that the ends of the brake pads have enough copper paste applied, if not, could result of the noise condition returning.



  5. (Chevrolet SS Models Only) Apply a rectangular shape of copper paste in the center of the spacer before installing on the back of the pad.

    Note: DO NOT replace brake pads for this condition.

  6. Re-install the front disc brake pads. Refer to Front Disc Brake Pads Replacement in SI.


    Important: DO NOT remove the silencers (1) on the pads.

    Important: Always replace brake pads with Brembo GM OEM pads (2). Aftermarket pads could result in the braking performance changing in many ways.

  7. Re-install the rear disc brake pads. Refer to Rear Disc Brake Pads Replacement in SI.

Version

2

Modified

March 6, 2017 – Added the Cadillac CT6 model.

 

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